The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

On stormy days debris from this unfinished and abandoned skyscraper rains down on the Bangkok streets.

This Bangkok high-rise looks like a rudimentary LEGO elephant.

This concrete church spent a period of its history as a World War II bunker.

These traffic lights celebrate the 100 year anniversary of the women's suffrage movement in Lithuania.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

This unique Renaissance castle was turned into a home for Nazi occultism.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

This probably wasn't what Mao had in mind.

The embalmed remains of the communist leader lie within a custom crystal coffin.

The most famous location in China was home to whole dynasties worth of imperial rulers.

An exploration of Malaysian heritage through the lens of traditional textiles.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

An 11th-century fortress home to one of the most influential royal houses in medieval Europe.

Hamburgers are intensely proud of their tunnel beneath the river.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.